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May 9, 1933. E. D. JEFFERSON AUTOMATIC CONTROL .VALVE FOR KIERS Filed March 14, 1932 Patented May 9, 1933 atom n..mrraason, or warm, uassaonusn'rrs; assmnoa 1'0 norm HUNT mama comramaor omen.

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MASSACHUSETTS, A CORPORATION OF MASSAGE?- auroma'ric common VALVE son xinas Application autumn 14, 1932. Serial No. 598,793.

The principal objects of this invention are to provide an internal automatically operatin valve for regulating the circulatlon 1n a iier to overcome the possibility of a bad boil and to provide simple and eifective means in the kier for controlling the flow of liquor down at the center of the kier to drain it by gravity. into the region of the I coils. {without being obstructed by the goods above. This is an improvement over the arrangement shown in my copending application for patent, Serial No. 524,438, filed March 23,

Other objects and advantages of the invention will appear hereinafter.

' Reference is to be had tq the accompanyingrdrawing, in which.

ig. 1 is a diametricalsectional view of a kier constructed in accordance with thlS' invention;

Fig. 2 is an enlarged sectional view of, the

-valve showing it'closed, and

Fig. 3 is a similar view showmg the valve.

the start, gummy substances are formed in masses throughout the kier and a bad. boil follows. a

The automatic control is de ndentupon the liquor below the grate. I for any rea-. son that in the goods above the grate does not come down-fast enough, the liquor below the grate will'be pumped out and recede from the goods and my automatic regulation is controlled by the level in the well.

The kier is packed full of oods and it is well known that there is .sel om any difficulty with the treatment of the goods around the circumference of the kier for a space of twelve or fourteen inches from the outer walls. It is in the center that the trouble 'the bottom of the equalization occurs. There is no way for the liquor to drain through the goods except, of course, by gravity as the pump, for well known reasons, cannot act' to help it. For the purpose of allowing the liquor to come down through at the centerI employ an equalizing ipem the heart ofthe' mass, perforated so t at the liquor can work downthrough it. The li uor at the center can enter this ipe throng the perforations and drop to t e bottom of 'the goods by gravity, as in my above identified application. The percolation of the liquor down through the goods is equalized at the center in this way and the goods are treated as well at the center as they are at the circumference of the kier.

'The chief new feature of this invention'isthe provision of an automatic valve in the kier to control the drawing of liquor out of In the form shown I have i1 u s trated a well known type of kier 10 having a steam Jheating coil 11 in the well below the grate 12 for heating the liquor therein by indirectheat or radiation. From the bottom of the kier is a discharge pi e 13 which is conneeted with a drain 14. t is also connected through the pipe 13 with a pump 18-. The discharge pipe 19 of this pump is connected with a vertical pipe 20 w ich extends up to the top of the kier outside and is connected with a spraying device or nozzle '21 for spraying the liquor into the top of the kier and spreading it allover it. A gauge 23 can be used to indicate when waxes obstruct the flow.

As stated above, under certain circumstances; the liquor in the well. below the grate-12 can drop down and a'li uid, level can be formed. Extending up om the grate to a point above the goods is a perforated pipe terminating at the. bottom 'in a bell-shaped chamber 31. This-pipepreferably is perforated every six inches. The to of this chamber has a valve seat 32 for a ollow metal float valve 33. The chamber 31 is bolted to the to. Thefloat valve 33 has a vertical gulde pin 34 guided in a hole in a fixed ide bar 35.

Under norma operation of the kier the float 33 is always as high as possible and her and an automatically operating valve in closed, as shown in Fig. 2. It opens only the chamber for opening and closing comwhen the unusual-circumstance happens that munication between the pipe and chamberthe pump is drawing out the liquor faster in accordance with any free level of liquor than it is draining down from the cloth and 1n the chamber. the level gets below that shown in Fig. 2. 4- The combination with a kier, a grate The level may get down low enough so that herein and a pump forsupplying the kier thing working pump 18 operates and possibly the heating coil may be exposed to With liquor at the top; of a liquid level opthe air and th r ight b a ibilit f erated, normally closed, yalve insidethe kier th water being drawn out a fth w ll b at the grate for mcreaslng the dralnage of in l ft dr B f thi can happen th liquor to a point below the grate when the' va ve 33 is opened as shown in Fig. 3. Now P mp draws out the iq faster han it the liquor can drain down into the welL dIaIIIS down below the grate With the valve As explained above it is diflicult to secure O even treatment of the goods under the pres- In g ny w r f I have hereunto afent conditions of treating cotton and that is x y g due to the fact that the liquorcannot de- EUGENE JEFFERSON. scend as rapidly at the center where the I goods are packed ti htly. Now with this equalizing pipe 30 t e liquor that gathers around the center can enterthis pipe and drop down if the valve opens.

Under ordinary operation, .with everywell, the float 33 will stay at eep the ipe 3O closed. The ibrces the liquor into the kier at the top. I not only get the ordinary percolation of the liquor downwardly through the goods, but at the center I get an additional drop of the liquor through the the top and pipe 31 when this is required. This may be considered as excess liquor and it comes out of the pipe near the bottom and immediately drains into the well.

Although I have illustrated and described only oneform of the invention I am aware of the fact that modifications can be made 1 therein by any person skilled in the art without departing from the scope of the invention as expressed in the claims. Therefore I do not wish tobe limited in this respect otherwise than as set forth in the clalms but what I claim is 1. In a kier, the combination of a grate, a well below the rate, a perforated pipe extending from t e grate upwardly, and a above t float at the bottom of the pipe for closing 1t when the liquor level at the bottom is above the grate and opening it otherwise v to allow the liquor to drain down into ,the

well below the grate.

2. In a kier, the combination of a grate and a perforated pipe extending from the grate upwardly to near the top of the kier, said pi e having a valve seat at the bottom lie grate, a chamber below the valve seat, and a float valve in said chamber for controlling the drainage of liquor from the bottom of the pipe.

3. The combination with a kier and a pump for supplying it with liquor at the top of a central vertical perforated pipe in the kier, a grate below the bottom of the pipe, a chamber with the top of which the pipe communicates, a valve seat in the cham- 

